/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.motoo.core;

import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;

/**
 * 将单个要执行的任务包装成实现Runnable的类，提交该任务到ThreadPoolExecutor线程池中，
 * 让线程池去执行任务
 * @author linfengqi
 * @version 1.0  May 13, 2009
 * @param <V>
 */
public class TaskExecutor<V> extends AbstractExecutor<V>{
	
	public TaskExecutor() {
		super();
	}
	
	public TaskExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime) {
		super(corePoolSize, maximumPoolSize, keepAliveTime);
	}

	@Override
	public Future<V> submit(Runnable task) {
		if (task == null) throw new NullPointerException();
        FutureTask<V> ftask = new FutureTask<V>(task, null);
        executorService.execute(ftask);
        return ftask;
	}
	
	@Override
	public Future<V> submit(Callable<V> task) {
		if (task == null) throw new NullPointerException();
        FutureTask<V> ftask = new FutureTask<V>(task);
        executorService.execute(ftask);
        return ftask;
	}
}
